Elevator.



Patented Oct. 28. |902. 4

v. w. MASON, 1n.

ELEVATUB.

(Applicahon led Apr. 9, 1902 3 Sheetsf-Sheet l.

(No Model.)

No. 7|l,993. Patented ct. 28, |902.

v. w. MASON, m. ELEVATOR.

(Application med Apr. a, 1902. (No Model.) 3 Sheets-Sheet 2.

No. 7||,99a. Patented ont. 2s, |902.

v. w. MAsoN, 1n.

ELE-VATOR.

lApplicution filed Apr. 9, 1902A QNo Model.) 3 Sheets-Sheet 3.

witnesses.' y A jzzfenor.'

`UNITED STATES PATENT OEEICE.

VOLNEY W. MASON, JR., OF NEW YORK, N. Y.

ELEVATO R.

SPECIFICATION forming part Of Letters Patent N0. 711,993, dated October 28, 1902. Application filed April 9, 1902. Serial No. 102,010. (No model.)

T0 all whom, it' mm1/y concern,.-

Beit known that I, VoLNEY W. MASON, Jr., of New York, in the borough of Manhattan and State of NewYork, have invented an Improvement in Elevators, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to elevators of the class comprising, essentially, apair of endless chains and a series of buckets carried by them,and has for its object to provide meansas rolls, for instance-for preventing the heavily-loaded chains from sagging as the buckets rise, which also act as guides to assist in maintaining true alinement of` the buckets in case they are unevenly loaded; also, to provide means-as rolls, for instance-which prevent the chains from sagging as the buckets fall; also, to provide means-as rolls, for instance-to prevent the chains from sagging as the buckets pass by the delivery-chute, to thereby prevent the buckets from striking the end of the chute; also, to provide a frame for supporting the shafts bearing the essential elements of the driving mechanism, whereby said shafts are always held in parallelism, notwithstanding the severe duty to which they are subjected.

Figure l shows in side elevation an elevator embodying this invention. Figs. 2 and 3 are details of one of the buckets. Fig. 4t is a front elevation of the elevator; Fig. 5, a detail of the support for the bucket which is located beneath the chute. Fig. 6 is a detail of the supporting-frame for the shafts of the driving mechanism. Fig. 7 is a side or edge view of said supporting-frame, and Fig. l8 is a detail showing a portion of each endless chain audits relative position tothe sprocketwheel.

ct represents the side bars of the main frame; b b, a pair of endless chains; c, the buckets attached to said chains; d d, the sprocket-wheels over which the chains pass which are located at the top of the main frame; c, the wheels over which the chains pass which are located at the bottom of the main frame. The sprocket-wheels d d (see Fig. 6) are secured to a shaft d', having its bearings in boxes d2 d2 on the frame f, which is secured to the upper ends of the side bars of the main frame, and at one end of said shaft d a toothed gear d3 is secured, which is engaged by a pinion d4, secured to a shaft d5, having its bearings in boxes ddadjustably mounted on said framef, and to said shaft d5 a sprocket- Wheel di' is secured, over which a chain ds passes, which passes around the sprocket-v wheel d, secured to a shaft d10, to which a sprocket -wheel C112 is secured, over which passes a sprocket-chain dw, which passes over a sprocket-wheel d, secured to any suitable driving-shaft.

The metallic frame f, (see Fig. 6,) which constitutes one of the novel features of this invention, comprises a horizontal portion, of a length to extend from one to the other side bar of the main frame, and a pair of parallel arms which project at right angles therefrom and which are secured to the side bars of the main frame.

The boxes d2 d2 comprise a bottom half or portion and a removable top half or portion, and the bottom half or portion is formed integral with the frame f, and as said frame in practice is disposed at an angle to a perpendicular the division-line between the bottom and top halves or portions is made at an angle to the plane of the frame so as to occupy a horizontal plane. The boxes d6 d, which are adjustably secured to the frame f, also comprise bottom halves or portions and top halves or portions, separated on a line at an angle to the plane of the frame so as to occupy a horizontal plane, and the bottom halves or portions are formed integral with base-plates d20, which are bolted to the frame f by bolts passing through slots in said plate. The slots run lengthwise the plate to provide for longitudinal adjustment thereof on the frame f, and on each arm of said frame f tWo lugs are cast, one above and the other below the base-plate d20, through which set-screws pass, the ends of which bear upon or against said plate to assist in holding it in correct position. The metallic frame f thus described supports the boxes d2 d2 and also the boxes d6 d, and it will be seen that the two shafts d d5 are thus held in parallelism at all times and under all conditions, which is important in order that the driving mechanism of the sprocketchains, the essential elements of IOO which are borne by said shafts, may run freely. By making the boxes 0l6 d adjustable toward and from the boxes d2 d2 the gears may be kept in mesh.

Upon the outer or upper side of the main frame a plurality of pairs of rolls g are placed, which are free to revolve on shafts g', held in suitable bearings in the side bars of the main frame. As many pairs of rolls g Will be provided as desired. The rolls g are formed y with plain faces having flanges at their outer sides, and when thus formed they present right-angular bucket-receiving portions. The buckets c are' formed with flat bottoms and vertical sides and also have an end Wall substantially as usual, and the bottoms and sides of said buckets being disposed at right angles to each other form right-angular engaging faces which engage the rolls g. The distance between the flanges of each pair of rolls is substantially equal to the Width of the buckets, so that the buckets may pass freely between said flanges and at the same time bear upon and be supported by said rolls, and said buckets are'held by the flanges of the rolls against lateral movement. It is important that the rolls shall be provided with flanges to guide the buckets while supporting them, as it frequently happens that they are unevenly loaded'and have a tendency to swing laterally, and such movement of the buckets tends to move the links of the chains out of true alinement, which results in undue friction of the parts. On the opposite side of the main frame a pair of fiatflaced rolls h h are provided, which are herein shown as mounted to revolve freely uponor they may be secured to the shaft d1, and said rolls are held by said shaft d10 in such relative position to the buckets as to .be engaged by the outer edges of the side walls of said buckets. The rolls h h are located a short distance below the delivery-chutej and occupying a fixed plane will act to keep the buckets from striking the end of the chute in case the chains sag unduly.

It will be seen that the outer edges of the buckets c serve as roll engaging portions which engage the bucket-engaging faces of the rolls h h.

There may be as many like pairs of rolls h h provided as desired, yet in practice a single pair located quite close to and beneath the chute accomplishes the desired results.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, isi l. ln an elevator of the character described, a pair of endless chains, means for supporting and moving them, buckets carried by said their upper or outer edges, combined with a pair of rolls and a support for holding them in position to engage said roll-engaging portions as the buckets are moved along by the chains, substantially as described.

3. In an elevator of the character described, a pair of endless chains, buckets carried by them having rollengaging portions along -their upper or outer edges and a chute located near the upper end of the elevator, combined with a pair of rolls supported beneath said chute and adjacent thereto which engage the roll-engaging portions of the buckets at points just beneath the chute, substantially as described.

`4. In an elevator of the character described, the combination of a pair of endless chains, buckets carried by them, a pair of sprocket- Wheels at the upper end of the main frame over which said chains pass, a shaft bearing saidsprocket-Wheels, a toothed gear secured to said shaft, a driving-pinion engaging said toothed gear, a shaft bearing said pinion, a driving-Wheel secured to said shaft and a frame secu red to the main frame having bearings for supporting said shafts in parallelism, substantially as described.

5; In an elevator 0f the character described, the combination of a pair ofV endless chains, buckets carried by them, a pairof sprocketwheels at the upper end of the main frame over which said chains pass, a shaft bearing said sprocket-Wheels, a toothed gear secured to said shaft, a driving-pinion engaging said toothed gear, a shaft bearing said pinion, a driving-wheel secured to said shaft and a frame secured to the main frame having bearings for supporting said shafts in parallelism, the bearings for one of said shafts being adj ustable relatively to the bearings for the other, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

VOLNEY W. MASON, JR.

Witnesses:

B. J. NoYns, J. L. HUTCHINSON.

IOO

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